Abstract
Pursuing high-effective electrocatalysts is of paramount importance yet a great challenge, drawbacks such as irregular morphology, weak corrosion resistance, and poor anti-poisoning that limited their catalytic performance. Kinds of strategies have been developed to synthesize nanocatalysts with properties of low-cost, high-performance, and long lifetime. Pt-based catalyst is one of the most effective anodic materials for direct fuel cells (DFCs), especially towards ethylene glycol oxidation reaction (EGOR). Herein, we integrate the advantages of both composition and morphology to finally synthesize a series of PtBi chain-typed nanoflowers (NFs) serving as high-efficiency anode catalysts. The Pt1Bi1 chain-typed NFs show much higher catalytic performances than Pt1Bi2, Pt2Bi1, and commercial Pt/C catalysts with the mass activity (1.17, 1.64, and 5.71 times higher, respectively) and retained mass activities (1.68, 3.26, and 13.1 times higher, respectively). Our present work opens a new way to promote the electrocatalytic activity and stability via synthesizing well-defined PtBi NFs with chain-typed structure. We also believe that the as-obtained PtBi NFs can be one of the candidates as promising anodic catalysts in DFCs.
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